wordpress-activitypub/includes/rest/class-webfinger.php

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<?php
namespace Activitypub\Rest;
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use WP_Error;
use WP_REST_Response;
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use Activitypub\Collection\Users as User_Collection;
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/**
* ActivityPub WebFinger REST-Class
*
* @author Matthias Pfefferle
*
* @see https://webfinger.net/
*/
class Webfinger {
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/**
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* Initialize the class, registering WordPress hooks.
*
* @return void
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*/
public static function init() {
self::register_routes();
}
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/**
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* Register routes.
*
* @return void
*/
public static function register_routes() {
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\register_rest_route(
ACTIVITYPUB_REST_NAMESPACE,
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'/webfinger',
array(
array(
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'methods' => \WP_REST_Server::READABLE,
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'callback' => array( self::class, 'webfinger' ),
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'args' => self::request_parameters(),
'permission_callback' => '__return_true',
),
)
);
}
/**
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* WebFinger endpoint.
*
* @param WP_REST_Request $request The request object.
*
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* @return WP_REST_Response The response object.
*/
public static function webfinger( $request ) {
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/*
* Action triggerd prior to the ActivityPub profile being created and sent to the client
*/
\do_action( 'activitypub_rest_webfinger_pre' );
$resource = $request->get_param( 'resource' );
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$response = self::get_profile( $resource );
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return new WP_REST_Response( $response, 200 );
}
/**
* The supported parameters
*
* @return array list of parameters
*/
public static function request_parameters() {
$params = array();
$params['resource'] = array(
'required' => true,
'type' => 'string',
'pattern' => '^(acct:)|^(https?://)(.+)$',
);
return $params;
}
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/**
* Get the WebFinger profile.
*
* @param string $resource the WebFinger resource.
*
* @return array the WebFinger profile.
*/
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public static function get_profile( $resource ) {
$user = User_Collection::get_by_resource( $resource );
if ( is_wp_error( $user ) ) {
return $user;
}
$aliases = array(
$user->get_url(),
$user->get_alternate_url(),
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);
$aliases = array_unique( $aliases );
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$profile = array(
'subject' => sprintf( 'acct:%s', $user->get_resource() ),
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'aliases' => array_values( array_unique( $aliases ) ),
'links' => array(
array(
'rel' => 'self',
'type' => 'application/activity+json',
'href' => $user->get_url(),
),
array(
'rel' => 'http://webfinger.net/rel/profile-page',
'type' => 'text/html',
'href' => $user->get_url(),
),
),
);
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if ( 'Person' !== $user->get_type() ) {
$profile['links'][0]['properties'] = array(
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'https://www.w3.org/ns/activitystreams#type' => $user->get_type(),
);
}
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return $profile;
}
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}